One that trips up LLMs in ways that wouldn't trip up humans is the chicken, fox and grain puzzle but with just the chicken. They tend to insist that the chicken be taken across the river, then back, then across again, for no reason other than the solution to the classic puzzle requires several crossings. No human would do that, by the time you've had the chicken across then even the most unobservant human would realize this isn't really a puzzle and would stop. When you ask it to justify each step you get increasingly incoherent answers.

Has anyone tried this on o1?